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ELEYATOR INDICATOR.

Patented July 14,1891.

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CHARLES IJUDOVICI, OF NEV YORK, N. Y.

ELEvAToR-INDICATOR.

SPECIFICATION forming part of Letters Patent No. 455,947, dated July 14, 1891. Application filed February 28, 1891. Serial No. 383,262. (No model.)

To all whoml t may concern.-

Be it known that I, CHARLES LUDovIoI, ot the city, county, and State of New York, a citizen of the United States, have invented certain new and useful Improvements in Indicators for Elevators, of which the following is a specification.

This invention relates to an improved indicating device for elevators, by which the position and movement of the car are indicated in a reliable manner on the different oors of a building, the indicating devices being arranged to indicate whether the car is going up or down, and adapted to be adjusted for work for any number of floors, in case some of the floors are to be omitted in running the elevator; and the invention consistsV of an indicator for elevators, which is operated by the ascending or descending motion of the car, and an endless rope which is loosely attached to said car and passed over a weighted pulley and over guide-wheels at the top part of the elevator-frame, so as to operaie by a gear-wheel transmission a second rope that is Wound upon a drum and connected to a vertically-guided indicator-rod, which is connected with all the indicating devices located on the different floors. Each indicator is provided With a weight that is connected to the vertically-movable indicator-rod, said weight being provided with a pointer moving along the face-plate 'of the indicator on which the numbers of the different floors are arranged. The weight is provided with means for engaging the projecting stop of a slide-rod that is guided in the casing of the indicator, theslide-rod being connected to an oscillating, sign-plate, which is turned on its axis by the ascending or descending motion of the weight, so as to indicate whether the elevator is going up or down. The ,stops on the slide-rod are adjustable, so as to adapt the same to the number of stories through which the elevator runs.

In the accompanying drawings, Figure l represents a front elevation of an elevator with my improved indicating devices. Fig. 2 is aside elevation, and Fig. Sis aplan of Fig. l. Figs. 4, 5, and 6 are details of the transmitting mechanism by which the motion of the car is transmitted to the indicator-rod by which the indicating devices in the different stories are operated. Fig. 7 is a front elevation -of one of my improved indicators, drawn on a larger scale. Fig. 8 is a transverse section on line S S, Fig. 7. Fig. 9 is a rear elevation, parts being broken away; and Fig. 10 a horizontal section on line l0 lO, Fig.4 7.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the frame of a passenger or freight elevator, which is made of any approved construction. l B is the car or platform of the same, which is suspended from a Wire rope and operated by hydraulic or other appliances. g f

At the lower part of the elevator-frame is located a Weighted or spring-actuated idlerpulley C, over which is passed an endless rope D, which is guided by tension-rollers d d and a grooved pulley of larger size, so as to turn by friction the pulley cl and the shaft of thc same and operate by transmitting gear-wheels e e a spirally-grooved drum E, which is sup-` ported in suitable bearings on the top part of the elevator-frame A. The endless rope D is loosely attached to the car B, so as to be operated by the same.

To the spirally-grooved drum E is applied a second rope F, which is conducted over suitable guide-pulleys f f located on the top part of the elevator-frame A to a verticallyguided indicator-rod G, that extends nearly throughout the full height of the elevatorframe, as shown clearly in Figs. l and 2. The weighted indicator-rod Gis moved in upward direction by the upward motion of the car and the intermediate transmitting devices, and in downward direction by the downward motion of the car, the motion of the indicator-rod being iny proportion to the motion of the car. The indicator-rod G is connected by chains or ropes to indicators I, of vwhich one is arranged on the elevator-frame for each story.

The construction of one of the indicators I is shown in detail in Figs. '7 to l0, it being composed of an exterior casing t and an in-v terior Weight i', which is guided on fixed rods i2 and attached to the rope i3, that passes over pulleys i4, located in the Wall inclosing the elevator-shaft, as shown in Fig. 2. The weight 'i' is provided with a pointer or index 5, that moves over the face-plate i of the indicator, said face-platebeing provided with as many gures from one upward as there are stories in the building for which the elevator is arranged. At one side of the indicator-casing't' is guided a rod h, which is provided with adjustable stops h h', of which the lower stop h is engaged by the recessed lower part of the weight e', while the upper stop h is engaged by apivoted and spring-actuated pawl h2 at the upper part of the Weight t'. is pivoted eccentrically to one end of an angular sign-plate L, which is located at the lower part of the indicator-casing and pivoted to the side wall of the casing t'. To one face of said angular sign-plate L is applied the word Up, while the other face carries the word Downf Between the angular sign-plate L and the face-plate i6 of the indicator is arranged a fixed sign-plate L', on which the word Going is placed. A'spring h3 presses against a heel h4 on one of the pivots of the angular signplate L andholds it in the position to which the same is set by the action of the slide-rod h. The vertically-movable weight t', acting on the stops h of the sliderod h, operates the latter and by the same the sign-plate L. When the weight t' acts on the lower stop 'ascending, the sign-plate L is turned so as to exhibit the-Word Up, while when the springactuated pawl h2 is acting on the upper stop h of the slide-rod h the latter is lifted and the sign-plate turned so as to indicate-the word Down. In other words, the ascending or descending weight sets the sign-plate so as to indicate the motion on which the car enters and before arriving at its uppermost or lowermost positions. In case the elevator is not running to all the stories it will be necessary to adjust the upper stop h at a lower point on the slide-rod h in proportion to the number of stories through which the car runs. If, for instance, the elevator is to run only through three stories of the building, the upper stop is adjusted on the rod h at about the height of the figure 3 on the tace-plate, and so on.

To enable the pawl h2 to pass the upper stop 7i', it is arranged in a recess of the weight 1l and acted upon by a spring h5, which is strong enough to shift the slide-rod h, which t gives sufficiently to permit the passing of the pawl h2 and weight t'. The pawl h2 is provided with a pivoted and springeactuated point 71X, which gives and permitsf the pawl h2 to pass below the upper stop without shifting the slide-rod h.

The transmitting mechanism by which motion is transmitted from the car to the indi- The lower end of the slide-rod h' cators is made in a simple and reliable manner and adapted to be applied to the elevators at present in use, while the indicating devices that are operated by the up or down motion of the car are of a simple construction, and have the additional feature of indicating at the same time the direction 0f motion of the elevator by the setting of the sign-plates.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with an elevator-car operated by suitable mechanism, of an endless rope loosely attached to said car and passed over an idler-pulley at the lower part of the elevator-frame, guide-pulleys for the upper end of the endless rope, a gear-wheel transmission and drum operated by said guide-pulleys, a second rope connected to t-he drum, and a vertically-guided' indicator-rod attached to said rope, so as to raise or lower the same by the ascending or descending motion of the car, substantially as set forth.

2. An indicator for elevators, composed of a verticallyguided Weight, a pointer attached t0 said weight and moving alongthe faceplate of the indicator, a slide-rod guided at one side of the indicator-casing and provided with stops engaged by the movable weight, and an angular sign-plate pivoted to thelower part of the indicator-casingand pivoted eccentrically to the slide-rod, so that said plate may be turned on its axis when the weight arrives at the ends of its motion, substantially as set forth. l

3. An indicator for elevators, composed of an exterior casing, a face-plate having figures corresponding to the number of stories, a

weight guided by fixed rods of the indicatorframe, said weight being connected to the movable actuating-rope, a slide'rod guided by the indicator-casing and provided with adjustable stops, said stops being adapted to be engaged by the movable weight, an angular sign-plate pivoted to the lower part of the casing and connected eccentrically to the slide-rod, and a locking-spring engaging an enlarged portion or heel on the pivot of the sign-plate, so as to retain the same in position after being turned, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

CHARLES LUDOVICI.

ICO

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